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Full-Text Articles in Management Sciences and Quantitative Methods
Decision Support Tools For Competitive Usda Food Aid Bidding, Jomon Aliyas Paul, Xinfang (Jocelyn) Wang
Decision Support Tools For Competitive Usda Food Aid Bidding, Jomon Aliyas Paul, Xinfang (Jocelyn) Wang
Jomon Aliyas Paul
The U.S. Department of Agriculture (USDA) currently uses a bidding system to determine carriers and suppliers that would partner in providing food aid annually in response to global emergencies and famine. We mimic the USDA approach via a robust optimization model featuring box and ellipsoid uncertainty frameworks to account for uncertainties in demand, supplier and carrier bid prices. Through a case study utilizing historical invoice data, we demonstrate our model applicability in improving ocean carrier and food supplier bid pricing strategy and similar supply chain network optimization problems. Through a validation algorithm we demonstrate the value of our robust models.
Modeling The Effects Of Port Disasters, Jomon Aliyas Paul, Michael Maloni
Modeling The Effects Of Port Disasters, Jomon Aliyas Paul, Michael Maloni
Jomon Aliyas Paul
Weather or terrorism-related disasters at seaports can lead to significant economic losses from vessel and cargo delays. In times of such disasters, port capacities and optimal shipment routings would change rapidly, requiring near real-time analyses for planning response operations. To address this challenge, we offer a decision support system to help port networks analyze disaster response scenarios. As part of the model, an algorithm routes arriving ships to ports to optimize the use of network capacity with respect to ocean and inland transportation, port and inventory capital costs. To reflect changing port congestion conditions, port capacities are dynamically updated in …
Evaluating Capacity Options For The North American West Coast Container Ports., Jomon Aliyas Paul, Michael Maloni
Evaluating Capacity Options For The North American West Coast Container Ports., Jomon Aliyas Paul, Michael Maloni
Jomon Aliyas Paul
As global trade continues to recover from the recent economic recession, US container port congestion experienced in the last decade will likely re-emerge. Yet there is limited research that examines network-wide port capacity in support of solutions for minimizing such congestion. To address this gap, we simulate the US West Coast container port network, quantifying the costs and benefits of different options to better utilize current port capacity across the entire network. We specifically assess both efficiency improvement and operational coordination options on historical and future container volumes. The results demonstrate the strength of efficiency as a means to alleviate …
Dry Port Development In China: Motivations, Challenges, And Opportunities, Qincheng Zheng, Michael Maloni, Jomon Aliyas Paul
Dry Port Development In China: Motivations, Challenges, And Opportunities, Qincheng Zheng, Michael Maloni, Jomon Aliyas Paul
Jomon Aliyas Paul
As coastal production costs in China rise, producers are moving inland to remain competitive with other Asian countries. As a result, Chinese sea ports are rapidly developing dry (i.e., inland) ports to compete for hinterland access. Yet the growing body of research examining dry ports has yet to analyze China. This article fills this gap by combining practitioner interviews, publicly available data, and industry and academic literature to provide an overview of dry ports in China. The article discusses the recent active development of dry ports in China and summarizes the existing dry port network. Motivations for further dry port …
Slow Steaming Impacts On Ocean Carriers And Shippers, Michael Maloni, Jomon Paul, David Gligor
Slow Steaming Impacts On Ocean Carriers And Shippers, Michael Maloni, Jomon Paul, David Gligor
Jomon Aliyas Paul
Ocean container carriers have implemented slow steaming (reduced vessel speeds) in recent years to improve fuel efficiency and lower greenhouse gas emissions. However, many shippers oppose the practice due to increased pipeline inventory associated with longer transit times. Given this conflict, this article seeks to quantify the costs and benefits of slow steaming relative to carriers and shippers. We simulate a high volume Asia-North America container trade lane to estimate slow steaming impacts under different vessel speeds, volumes and fuel prices. Under current conditions, the results justify slow steaming practices, revealing extra slow steaming as the most beneficial vessel speed …
Simulation Of Airport Security Checkpoint Operations, Rajan Batta, Colin Drury, Li Lin, Jomon Aliyas Paul, Xiaofeng Nie, Clara Marin
Simulation Of Airport Security Checkpoint Operations, Rajan Batta, Colin Drury, Li Lin, Jomon Aliyas Paul, Xiaofeng Nie, Clara Marin
Jomon Aliyas Paul
Screening of passengers at the airport security check point is one of the most critical measures to ensure our nation’s aviation security and safety. In this study, we investigate the operational efficiency and inspection effectiveness of passenger screening, including the magnetometer (MAG), X-Ray machines, manual wand search, trace of explosive residuals, and private screening at an airport. Passenger volumes by the day of the week and times of the day, along with the corresponding staffing levels of the screening personnel are modeled. Performance of the security system with respect to passengers making the flights on time is evaluated for various …